206488660 has 48 divisors (see below), whose sum is σ = 503717760. Its totient is φ = 69632640.

The previous prime is 206488657. The next prime is 206488673. The reversal of 206488660 is 66884602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3550 + ... + 20629.

It is an arithmetic number, because the mean of its divisors is an integer number (10494120).

Almost surely, 2^206488660 is an apocalyptic number.

206488660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206488660 is an abundant number, since it is smaller than the sum of its proper divisors (297229100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206488660 is a wasteful number, since it uses less digits than its factorization.

206488660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24256 (or 24254 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 206488660 is about 14369.7132887194. The cubic root of 206488660 is about 591.0606793877.

The spelling of 206488660 in words is "two hundred six million, four hundred eighty-eight thousand, six hundred sixty".